Corner construction for flanged roofing sheets



O. W. HAWKSWORTH. CORNER CONSTRUCTION FOR FLANGED ROOFING SHEETS.APPLICATION FILED APR.9|1920.

1,41 1 ,352. Patented Apr. 4, 1922.

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avwentoz .851 M l fi m attuned D. W. HAWKSWORTH. CORNER cowsnwcnow FORFLANGED ROOFING SHE ETS.

APPHCATION FILED APR.9, 1920.

Patented Apr. 4, 1922.

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DAVID W. HAWKSWORTH, OF DETROIT, MICHIGAN, ASSIGNOR TO HUTCI-IINS CARROOFING COMPANY OF DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN.

CORNER CONSTRUCTION FOR FLANGED ROOFING SHEETS.

Application filed April 9,

T 0 all whom it may concern:

Be it known that I, DAVID W. HAWKS- WORTH, a citizen of the UnitedStates of America, residin at Detroit, in the county of Wayne and ate ofMichigan, have mvented certain new and useful Improvements in CornerConstruction for Flanged Roofing Sheets, of which the following 1s aspecification, reference being had therein to the accompanying drawings.

The invention relates to. corner constructions for flanged sheets, beingparticularly designed for use in connection w1th car roofing sheetswhich have a flanged hatch opening therein. It is the object of thei'nventlon to provide a construction WhlCh may be easily applied to thecorner and WlllCh not only strengthens the same, but forms a water-proojoint. To thls end the invention consists in the construction ashereinafter set forth.

In the drawings:

Figure 1 is a perspective view of a portion of the sheet;

Figure 2 is a plan view thereof;

Figure 3 is a side elevation;

Figure 4 is a View similar to Figure 2, showing a modified construction;

Figure 5 is a side elevation thereof.

A is a roofing sheet; B are upstanding flanges formed on several sidesof a hatch opening 0 in the sheet. These flanges are formed from aportion of the metal removed when forming the hatch opening, andconsequently, the ends of the flanges are beveled, resulting from themiter cut in the sheet from Which they are formed.

To close the'opening in the corner so as to both mechanically reinforcethe flanges and to form a weatherproof joint, I have provided thefollowing construction: D is an angle bent sheet havin at its upper edgea return-bent flange E adapted to embrace the upper edges of the flangeB. At the lower ends of the angle blade D are flanges F bent laterallyoutward therefrom and passing beneath the bottom of the sheet A. Thesebottom flanges will, therefore, hold the angle from upward displacement,while the return-bent flanges at the upper ed e will hold the angle fromg displacement later- Specification of Letters Patent.

upstanding flanges or it Patented Apr. 4, 1922. 1920. Serial No.372,540.

ally. Where a weather proof joint is required, the ends of theupstanding flanges may be soldered to the angle.

11 applying the corner reinforcement to sheet, it may either be firstengaged with bottom of the sheet and crimped to the may be first appliedto the upstanding flanges and the bottom flanges then bent intoposition. As shown in F igures 1, 2 and 3, the bottom flanges F arefirst engaged beneath the sheet and the upstanding portion of the angleis then returnbent to embrace the upstanding flanges of the sheet. Withthis construction the return-bent portions are severed from each otherat the corner to facilitate bending. With the construction shown inFigure 4, the return-bent flange extends completely around the cornerand is formed in advance of engagement with the upstanding flanges ofthe sheet. With this construction, therefore, the lower flanges F arebent beneath the sheet after the return-bent flange is engaged with theupstanding flanges thereof.

What I claim as my invention is:

1. The combination with a sheet having upstanding flanges at angles toeach other, .of an angle member forming a corner for said sheet, beingprovided with return-bent flanges for embracing the upper edges of saidupstanding flanges, and base flanges for extending beneath the sheet.

2. The combination with a sheet having upstanding flanges at an angleto'each other, of an angle bent corner section for bridging between saidupstanding flanges, said section being provided with return-bent flangesat its upper end for embracing the upstanding flanges of said sheet, andlaterally-extending flanges at the lower end for insertion beneath thebottom of the sheet.

3. The combination with a sheet having upstanding flanges at an angle toeach other, of a corner reinforcement therefor, com prising anangle-bent member having base flanges extending outward beneath thesheet, and return-bent flanges at its upper end embracing the upstandingflanges of said sheet.

In testimony whereof I aflix my signature.

DAVID W. 'HAWKSWORTH.

